More master side changes for convergence with XFA.

fpdfsdk/include/fsdk_mgr.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef FPDFSDK_INCLUDE_FSDK_MGR_H_
 #define FPDFSDK_INCLUDE_FSDK_MGR_H_
 
 #include <map>
@@ skipping 211 matching lines @@
   CFFL_IFormFiller* m_pIFormFiller;
   IFX_SystemHandler* m_pSysHandler;
 };
 
 class CPDFSDK_Document {
  public:
   CPDFSDK_Document(CPDF_Document* pDoc, CPDFDoc_Environment* pEnv);
   ~CPDFSDK_Document();
 
   CPDFSDK_InterForm* GetInterForm();
-  CPDF_Document* GetDocument() { return m_pDoc; }
+
+  // Gets the document object for the next layer down; for master this is
+  // a CPDF_Document, but for XFA it is a CPDFXFA_Document.
+  CPDF_Document* GetDocument() const { return m_pDoc; }
+
+  // Gets the CPDF_Document, either directly in master, or from the
+  // CPDFXFA_Document for XFA.
+  CPDF_Document* GetPDFDocument() const { return m_pDoc; }
 
   CPDFSDK_PageView* GetPageView(CPDF_Page* pPDFPage, FX_BOOL ReNew = TRUE);
   CPDFSDK_PageView* GetPageView(int nIndex);
   CPDFSDK_PageView* GetCurrentView();
   void ReMovePageView(CPDF_Page* pPDFPage);
   void UpdateAllViews(CPDFSDK_PageView* pSender, CPDFSDK_Annot* pAnnot);
 
   CPDFSDK_Annot* GetFocusAnnot();
 
   IJS_Runtime* GetJsRuntime();
@@ skipping 173 matching lines @@
     }
 
     if (nStartPos < m)
       QuickSort(nStartPos, m, bAscend, pCompare);
     if (nStopPos > m)
       QuickSort(m, nStopPos, bAscend, pCompare);
   }
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_MGR_H_